Solution:
When 500 gm mass is removed then
When 700 gm mass is removed then
The system shown in Fig. is initially in equilibrium. When the 500 gm mass is removed, the system oscillates with a time period 4 sec. On removing the 700 gm mass also, time period of oscillation will be:
When 500 gm mass is removed then
When 700 gm mass is removed then